The difference between Disdainful and Slight

When used as adjectives, disdainful means showing contempt or scorn, whereas slight means small in amount, gentle, or weak.

Slight is also noun with the meaning: the act of slighting.

Slight is also verb with the meaning: to treat as slight or not worthy of attention.

check bellow for the other definitions of Disdainful and Slight

Disdainful as an adjective:

Showing contempt or scorn; having a pronounced lack of concern for others viewed as unworthy.

Examples:

"He was disdainful of those he thought of as the little people. He openly sneered at them. They mocked him behind his back."

"She glimpsed at the people whom she had left behind, and smirked in the most disdainful manner towards them."

Slight as an adjective:

Small in amount, gentle, or weak; inconsiderable; unimportant; insignificant; not severe.

Examples:

"a slight (i.e. feeble) effort; a slight (i.e. not deep) impression; a slight (i.e. not convincing) argument; a slight (i.e. not thorough) examination; a slight (i.e. not severe) pain; in the slight future (i.e. the very [[near]] future)"
Slight as an adjective:

Not stout or heavy; slender.

Examples:

"a slight but graceful woman"
Slight as an adjective (regional):

Even, smooth or level; still (of the sea).

Examples:

"A slight stone"

"The sea was slight and calm"
Slight as an adjective (obsolete):

Foolish; silly; weak in intellect.

Examples:

"rfquotek Hudibras"
Slight as an adjective (regional, obsolete):

Bad, of poor quality (as goods).

Examples:

"A gullible chapman was fooled into buying really slight goods."
Slight as an adjective (dated):

Slighting; treating with disdain.

Slight as a verb (transitive):

To treat as slight or not worthy of attention; to make light of.
Slight as a verb (transitive):

To give lesser weight or importance to.
Slight as a verb (transitive):

To treat with disdain or neglect, usually out of prejudice, hatred, or jealousy; to ignore disrespectfully.
Slight as a verb (intransitive):

To act negligently or carelessly.
Slight as a verb (transitive, military, of a fortification):

To render no longer defensible by full or partial demolition.

Examples:

"rfquotek Clarendon"
Slight as a verb (transitive):

To make even or level.

Examples:

"rfquotek Hexham"
Slight as a verb (transitive):

To throw heedlessly.

Slight as a noun:

The act of slighting; a deliberate act of neglect or discourtesy.
Slight as a noun (obsolete):

Sleight.

Examples:

"rfquotek Edmund Spenser"